For first time, make a guess $1000/(1+10%)~909. Next time, take another factor of 1/(1+10%), etc.
回複:讓人煩惱的禮金卡問題
所有跟帖:
• 回複:回複:讓人煩惱的禮金卡問題 -火球魔法- ♂ (160 bytes) () 01/06/2009 postreply 01:54:19
• 回複:回複:回複:讓人煩惱的禮金卡問題 -justatry- ♂ (88 bytes) () 01/06/2009 postreply 21:45:31